Oil combustion apparatus



March l, 1966 HARURO SUMA ETAL 3,237,678

OIL COMBUSTION APPARATUS Filed May 2:2, 1964 'I sheets-sheet 1 FIG.

7 8 les 6 I7 5? 9 5 @DU/l] l lfm/amn# Hamro Suma ATTORNEYS March 1, 1966 HARURO SUMA ETAL OIL COMBUSTION APPARATUS Filed May 22, 1964 7 sheets-sheet 2 n m m W, MA n .lf/Y I w T.

F IG. 2

March 1, 1966 HARuRo SUMA ETAL 3,237,673

OIL COMBUSTION APPARATUS Filed May 22, 1964 '7 Sheets-Sheet 5 l'nuan ors Ha m ra Suma ATTORNEYS OIL COMBUSTION APPARATUS Filed May 22, 1964 '7 Sheets-Sheet 4 FIC-3.4

-Jr'uro Sama 5 hinyd lg/A -smmi ATTORNEYS March l, 1966 HARURO SUMA ETAL 3,237,678

OIL GOMBUSTION APPARATUS '7 Sheets-Sheet 5 Filed May 22, 1964 March 1, 1966 HARuRo SUMA ETAL 3,237,678

OIL COMBUSTION APPARATUS Filed May 22, 1964 '7 Sheets-Sheet 6 FIG. e '2* Inl/fivre Harufv Suma Shinya 7gg-514ml B/zwlwwwm ATTORNEYS March 1, 1966 HARuRo SUMA ETAL 3,237,673

OIL COMBUSTION APPARATUS '7 Sheets-Shea?I 7 Filed May 22, 1964 IOEPN1 United States Patent C) 3,237,678 OIL COMBUSTION APPARATUS Haruro Suma, Kadoma-slii, and Shinya Tsutsurni, Kobe, Japan, assignors to Matsushita Electric Industrial Co., Ltd., Osaka, Japan, a corporation of Japan Filed May 22, 1964, Ser. No. 369,463 Claims priority, application Japan, May 25, 1963, SiS/39,307; Dec. 12, 1963, .3S/93,845 6 Claims. (Cl. 15S- 94) The present invention relates to oil combustion appara- Vtus and more particularly to convection type oil combustion apparatus provided with a cylindrical wick which comprises a cylindrical air conduit member disposed longitudinally within a fuel reservoir and a cylindrical wick disposed along the outer periphery of the cylindrical air conduit member so that primary air is drawn through the cylindrical air conduit member and secondary air is drawn through the outer periphery of the apparatus for supplying the air to the tip portion of the wick for combustion.

The primary object of the invention is to provide an oil combustion apparatus in which an auxiliary wick is provided at an upper part within a cylindrical air conduit member having a main cylindrical wick disposed along the outer periphery theroef and is brought into contact with the inside face of the main wick to obtain therefrom fuel required for ignition, and manipulation of an externally provided ignition lever causes upward movement of the auxiliary wick and at the same time closes the contacts of an ignition heater to ignite the auxilairy wick so that a pilot flame on the auxiliary wick can be made to spread to the main wick, whereby a simplified manner of oil supply to the auxiliary wick can be obtained and mere manipulation of the ignition lever can unfailingly ignite the main wick from inside thereof.

Another object of the invention is to provide an oil cornbustion apparatus of the above character with a high degree of safety in which the manipulation of the ignition lever for the purpose of igniting operation simultaneously causes a fire extinguishing cover covering the combustion section to move upwardly away therefrom and to maintain it at an elevated position at which combustion can be unobstructedly made, and in the event that the apparatus is upset or tilted more than a predetermined allowable inclination due to an unexpected accident, the iire extinguishing cover is made to move abruptly downwardly to completely cover the combustion section to extinguish the fire, whereby any danger of instantaneously causing re by ignition of leaked fuel due to such upset of the apparatus can be completely eliminated and the igniting operation and proper setting of the re extinguishing means can simultaneously be effected by mere manipulation of the single ignition lever.

Still another object of the invention is to provide an oil combustion apparatus of the above character in which the ignition means including the auxiliary wick and the ignition heater and the re extinguishing means including the elements for operating the re extinguishing cover are compactly incorporated in the cylindrical air conduit member to thereby maintain beautiful external appearance of the apparatus and to insure freedom from erroneous operation of the ignition and re extinguishing means due to breakage of the elements caused by an external shock or the like.

A further object of the invention is to provide an oil combustion apparatus of the above character in which the auxiliary wick is brought into contact with a portion of the inside face of the main wick to obtain by means of the capillary action the fuel required for ignition from the main wick so that the auxiliary wick of short length can sufficiently satisfactorily attain the purpose of ignition to thereby simplify the structure of the ignition means and 3,237,678 Patented Mar. l, 1966 ICC an expensive material optimum for ignition can be utilized as the auxiliary wick to attain economical igniting operation of the apparatus.

According to the invention, there is provided an oil combustion apparatus comprising a fuel reservoir, a cylindrical air conduit member supporting a main wick on its outer peripheral face for conducting primary air therethrough for supply to the main Wick, ignition means including an auxiliary wick disposed at an upper portion on the inside wall of said cylindrical air conduit member and brought into contact with the inner face of the main wick for receiving therefrom the supply of fuel required for ignition and a re extinguishing pipe fixed at a predetermined position in said air conduit member so that the tip portion of the auxiliary wick can be exposed thereabove in interengaging relation with an igniting operation on the auxiliary wick, and fire extinguishing means operative in response to an accident such as yupset of said apparatus to abruptly cause downward movement of a re extinguishing cover to thereby interrupt the combustion by the main wick.

Various other objects and advantages of the present invention will be more clearly understood from the following detailed description when read in conjunction with the accompanying drawings, in which:

FIG. 1 is a front elevational View of an oil combustion apparatus embodying the invention with parts cut away to show the internal structure thereof;

FIG. 2 is an enlarged longitudinal sectional view of the oil combustion apparatus of the invention, with an upper portion of a chimney disposed above the combustion section, a fuel reservoir and other elements removed to show the internal structure of re extinguishing means and ignition means provided therein;

FIG. 3 is a view similar to FIG. 2 but showing another form of lire extinguishing means and ignition means of the invention;

FIG. 4 is a top plan View of FIG. 3;

FIG, 5 is also a View similar to FIG. 2 but showing still another form of fire extinguishing means and ignition means of the invention;

FIG. 6 is also a view similar to FIG. 2 but showing yet another form of fire extinguishing means and ignition means of the invention; and

FIG. 7 is a side View of FIG. 6.

FIG. 8 is an isometric view of the engaging member 99, seen in the side and end elevation in FIGURES 6 and 7.

The invention will now be described in detail with reference to the accompanying drawings. At iirst referring to FIG. l, there is shown an oil combustion apparatus of the invention, the base portion of which is formed as a fuel reservoir 1 containing fuel or kerosene therein. A cylindrical air conduit member 2 is integrally formed with the reservoir 1 and extends upwardly from the lower central portion of the reservoir l to protrude above the upper face thereof. A cylindrical main wick 3 is disposed `along the outer periphery of the cylindrical air conduit member 2, with its upper end protruding slightly above the end edge of the upper opening of the air conduit member 2 and its lower end immersed in the fuel in the fuel reservoir 1. An outer cylinder 4 is disposed about the outer periphery of the main wick 3 exposed outwardly on the upper peripheral face of the fuel reservoir l and is fixed at its lower end to the fuel reservoir 1. The outer cylinder 4 urges the upper portion of the main wick 3 towards the cylindrical air conduit member 2 to thereby retain the wick 3 between it and the air conduit member 2. Radially outside of the outer cylinder 4, there is disposed an air flow regulating member 5 of cylindrical shape having a mutiplicity of air supply openings thereon. The air flow regulating member 5 is unitarily ixed at its lower end to the outer cylinder 4 and is mounted on the fuel reservoir 1. An air iiow controlling collar 6 is placed on the upper end edge of the air ow regulating member 4 in a manner to cover the upper end of the cylindrical wick 3 and the uper portion of the air conduit member 2 and has a central aperture 7 of a diameter approximately equal to that of the `cylindrical wick 3. A spreader 8 having a multiplicity of small perforations thereon is movably placed in the upper opening of the air conduit member 2 in a manner that its upper portion protrudes upwardly above the central aperture 7 of the air flow controlling collar 6.

Disposed radially outside of the air flow regulating member 5 and mounted on the fuel reservoir 1, there is a chimney 19 which is ,provided with a plurality of air intake ports 9 at the lower portion thereof. External air drawn through the intake ports 9 is led through the air iiow regulating member 5 to the tip portion of the cylindrical wick 3, that is, the combustion section of the apparatus. The chimney 19 is detachably joined to the fuel reservoir 1 by means of a so-called bayonet joint. Or more precisely, a plurality of lugs 1d are formed on the lower outer peripheral portion of the funnel 19, while a plurality of lug engaging portions 11 with cutouts are formed in the fuel reservoir 1 in opposing relation to the lugs 10. The lugs 10 of the chimney 19 are fitted in the cutouts of the opposite lug engaging portions 11 of the reservoir 1 and the chimney 19 is suitably rot-ated to detachably mount the same on the fuel reservoir 1. A cylindrical frame member 12 is mounted about the upper opening of the chimney 19 to radiate the heat of combustion outwardly and has a plurality of apertures 13 formed on the side wall thereof. The upper opening of the heat radiating frame member 12 is suitably covered by a cover member 14. A handle 15 is tted to the heat radiating frame member 12, and a transparent window 16 is suitably provided on the side wall of the chimney 19. An air flow guide member 17 is suitably provided so as to guide the air drawn from the air intake ports 9 towards the combustion section. The fuel reservoir 1 is supported on support legs 18.

When, with the above arrangement, combustion takes place at the tip portion of the cylindrical wick 3, primary air drawn from the lower portion of the air conduit member 2 and passing therethrough is fed through the perforations of the spreader S to the upper inner peripheral portion of the wick 3, thence to the tip portion thereof. External air or secondary air is drawn through the air intake ports 9 and fed to the upper outer peripheral portion of the cylindrical wick 3. Thus, the primary and secondary air conjointly supports the combustion. The oil combustion apparatus can easily be carried to any desired place by holding it by hand at the handle 15.

Hereinunder, description will be made with regard to various forms of lire extinguishing means and ignition means incorported in the oil combustion apparatus of the invention.

One form of such means is illustrated in FIG. 2. A holding member 2t) is fitted on the upper inside Wall of the air conduit member 2 in a manner that it extends radially inwardly to deiine a space between its extended wall and the inside wall of the air conduit member 2. A longitudinal guide slot 21 is formed in the extended wall of the holding member 20, which is open at the upper end. A fire extinguishing pipe 22 is longitudinally disposed in the upper opening of the bulged portion defined by the holding member 20. An auxiliary wick 23 is disposed in the space in the extended portion and supported in a supporting pipe 24. The upper end of the auxiliary wick 23 suitably protrudes from the upper opening of the supporting pipe 24 and is urged by externally provided means upwardly to a position exposed above the upper opening of the tire extinguishing pipe 22 and downwardly to a position retracted into the fire extinguishing pipe 22. The

lower end of the auxiliary wick 23 is retained in the holding member 20 and is brought into contact with the inner face of the main cylindrical wick 3 through an opening bored in the air conduit member 2. An abutment 25 is fixed to the lower end of the supporting pipe 24 and has a portion thereof made to project radially inwardly into the air conduit member 2 through the slot 21 of the holding member 20. A helical spring 26 is fitted on the supporting pipe 24 between the lower end of the fire extinguishing pipe 22 and the upper end of the abutment 25 to urge the supporting pipe 24 normally downwardly so that t-he tip portion of the auxiliary wick 23 is normally retracted into the iire extinguishing pipe 22.

An ignition heater 27 is disposed adjacent the upper opening of the tire extinguishing pipe 22 to ignite the auxiliary wick 23 when it is exposed above the upper opening of the fire extinguishing pipe 22. An ignition lever 29 having an ignition button (not shown) at one end is pivotally mounted on a portion of a lower side of the fuel reservoir 1 by means of a pivot pin 28. To the other end of the ignition lever 29, there is fitted the lower end of an ignition rod 31 as at 30. The ignition rod 31 extends upwardly in the air conduit member 2, and the spreader 8 described above is fitted to the upper end of the ignition rod 31. A guide member 32 is suitably provided in the air conduit member 2 to support an intermediate portion of the ignition rod 31 for free vertical movement. A shoulder 33 is formed at a portion of the ignition rod 31 in a 4manner that it is disposed opposite the projected portion of the abutment 25 projecting radially inwardly through the slot 21 of the holding member 20. A contactor 35 is fitted on the shoulder 33 through an electrical insulator 34 and disposed opposite the ignition heater 27. It will therefore be understood that, by forcing the ignition lever 29 downwardly, the spreader 8 and the auxiliary wick 23 are urged upwardly by means of the ignition rod 31 and at the same time the contactor 35 is brought into contact with a terminal of the ignition heater 27 to conduct current to the heater 27.

A tire extinguishing lever 36 is swingably supported at one end by the pivot pin 28 and urged normally downwardly by a spring 37 coiled about the pivot pin 2S. A tire extinguishing rod 38 extends longitudinally upwardly through the central space in the air conduit member 2 and through the spreader 8, and a fire extinguishing cover 41 which covers the combustion section is fixed to the upper end of the iire extinguishing rod 38. The lower end of the 'tire extinguishing rod 38 is suitably curved to be pivotally connected to the other end of the tire extinguishing lever 36 as at 40. Guide openings 39 are suitably bored in the ignition rod 31 for guiding free vertical movement of the lire extinguishing rod 38. The re extinguishing lever 36 overlies on the ignition lever 29 and moves in association wit-h the movement of the ignition lever 29. Therefore, movement of the ignition lever -29 causes associated movement of the lire extinguishing cover 41. A locking lever 42 is swingably supported at one end by the guide member 32 and depends downwardly into the air conduit member 2. An intermediate portion of the locking lever 42 is suitably stepped as at 43. An unlocking lever 44 is swingably -supported at one end by the pivot pin `28 and is suitably bent as at 45 intermediate its length so as to take a substantially V-like shape. The other end of the V- shaped unlocking lever 44 is made to abut a door surface 46 on which the oil combustion apparatus is placed, and a helical spring 47 is iixed at one end to the free end of Ithe locking lever 42 and at the other end to a portion of the unlocking lever 44 so as to normally urge the bent portion 45 in a direction in which the bent portion 45 always abuts the locking lever 42. When, with the above arrangement, the free end of the lire extinguishing lever 36 is urged to swing upwardly, the mounting end 40 0f the tire extenguishing rod 385 in the fire extinguishing leve-r 36 is engaged by the stepped portion 43 of the locking lever 42.

The oil combustion apparatus of the invention with such ignition and Lfire extinguishing means operates in the following manner. FIG. 2 shows a non-operative state of the apparatus and therefore the fire extinguishing cover 41 is in its lowered position to entirely cover the combustion section. For ignition, the free end of the ignition lever 29 is urged downwardly to cause upward movement of the other end of the ignition lever 29 to thereby urge the ignition rod 31 upwardly. During this upward movement, the shoulder 33 of the ignition rod 31 abuts the projected portion of the abutment 25 pro- -truding from the slot 21 of the holding member 20 to cause upward movement of the supporting pipe 24, hence the auxiliary wick 23, against the force of the spring 26 so that the tip portion of the auxiliary wick 23 is exposed above the upper opening of the fire extinguishing pipe 22. The upward movement of the ignition lrod 31 also causes the contactor 35 to contact the terminal of the ignition heater 27, which is thereby energized. Therefore, the auxiliary wick 23 exposed above the upper opening of the fire extinguishing pipe 22 is ignited `by the ignition heater 27. Meanwhile, the spreader 8 is urged upwardly by the upward movement of the ignition rod 31 to -form a space between the spreader 8 and the upper end of the air conduit member 2. Therefore, a pilot flame burning on the auxiliary wick 23 can spread to the main Wick 3 for combustion by the main wick 3.

As the fire extinguishing lever 36 swings about the pivot pin 28 in interengaging relation with the ignition lever 29, the fire extinguishing rod 38 is urged upwardly and the fire extinguishing cover 41 is also moved upward- 1y away from the combustion section. When the fire extinguishing rod 38 moves upwardly more than a predetermined distance, the mounting end of the fire extinguishing rod 38 in the fire extinguishing lever 36 is engaged by the stepped portion 43 of' the locking lever 42 and locked in place. Therefore, upon releasing the force on the ignition lever 29, the ignition rod 31 moves downwardly to the original lower position by gravity and the spreader 8 also moves downwardly to the normal operative position in the upper opening of the air conduit member 2. The auxiliary wick 23 is retracted down- Wa-rdly into the fire extinguishing pipe 22 by the action of the spring k26 and the fiame on the auxiliary wick 23 is extinguished. Thus, the entire ignition system, that is, the ignition unit is restored to the normal nonoperative state.

Since, however, the `fire extinguishing rod 38 is locked by the stepped portion 43 of the locking lever 42, the fire extinguishing lever 36 and the fire extinguishing rod 38 are held in their elevated positions. The fire extinguishing cover 41 has been moved upwardly away from the combustion section and held at an elevated position shown in chain lines, and the entire fire extinguishing system, that is, the lire extinguishing unit is prevented from moving back to the original nonoperative position even after the force on the ignition lever 29 is released. Therefore, combustion continues with the fire extinguishing unit set at .the predetermined operative position.

If, during combustion, the oil combustion apparatus is upset or tilted at more than a predetermined angle due to an accident, the bottom of the apparatus is now out of contact with the floor surface 46. Under this situation, that end of the unlocking lever 44 which abuts the oor surface 46 is urged downwardly by the action of the spring 47, and consequently the bent portion of the unlocking lever 44 thrusts the locking lever 42 to disengage the mounting end 49 of the fire extinguishing rod 38 from the stepped portion 43 of the locking lever 42. Therefore, the first extinguishing lever 36 rapidly swings downwardly by being urged by the spring 37 and the fire extinguishing rod 38 operatively connected to the 6 lever 36 is also moved abruptly downwardly, with the fire extinguishing cover 41 completely covering the combustion section to extinguish the fire.

Description will next be made with reference to FIGS. 3 and 4 showing another form of ignition and fire extinguishing means incorporated in the oil combustion apparatus of the invention. A holding member 50 is tted on the upper inner Wall of the cylindrical air conduit member 2 in a manner that it extends radially inwardly to define a space between the extended Wall and the inside wall of the air conduit member 2. A longitudinal guide slot 51 is formed in the bulged wall of the holding member 50, which is open at the upper end. A fire extinguishing pipe 52 is longitudinally disposed in the upper opening of the extended portion defined by the holding member 56. An auxiliary wick 53 is disposed in the space in the bulged portion and supported in a supporting pipe 54. The upper end of the auxiliary wick 53 suitably protrudes from the upper opening of the supporting pipe 54 and is urged by externally provided means upwardly to a position exposed above the upper opening of the fire extinguishing pipe 52 and downwardly to a position retracted into the lire extinguishing pipe 52. The lower end of the auxiliary wick 53 is retained in the holding member 50 and is brought into contact with the inner face of the main wick 3 through an opening bored in the air conduit member 2. An abutment 55 is fixed to the lower end of the supporting pipe 54 and has a portion thereof made to project radially inwardly into the air conduit member 2 through the slot 51 of the holding member 50. A helical spring 56 is fitted on the supporting pipe 54 between the lower end of the fire extinguishing pipe 52 and the upper end of the abutment 55 to normally urge the supporting pipe 54 downwardly so that the tip portion of the auxiliary wick 53 is normally retracted into the fire extinguishing pipe 52.

An ignition heater 57 is disposed adjacent the upper opening of the fire extinguishing pipe 52 to ignite the auxiliary wick 53 when it is exposed above the upper opening of the fire extinguishing pipe 52. A fire extinguishing cover 58 is provide-d to cover the combustion section about the tip portion of the cylindrical main wick 3. A spreader shaft 59 is disposed longitudinally centrally of the air conduit member 2 for free vertical movement therein and has a spreader seat 59 at its top end, on which the spreader 8 is detachably mounted. A shaft 60 Vsupported by 59 of member 59, of the fire extinguishing cover 58 is disposed longitudinally centrally of the air conduit member 2 in parallel with the spreader shaft 59 which in turn is journalled in a bearing member 76 so that member 60 is also freely movable in the vertical direction in the air conduit member 2. The shaft 60 extends upwardly through the central portion of the spreader 8 and has the fire extinguishing cover 58 fixed at its top end.

An ignition lever 61 is joined at one end to the lower end of the 'spreader shaft 59. A mounting member 62 is provided on the ignition lever 61 at a position approximately intermediate its length for pivotally mounting the lever 61 on a supporting block 65 fitted to the bottom face of the fuel reservoir 1. The joined end of the ignition lever 61 is normally urged downwardly by a helical spring 77 provided at the supporting block 65. Further, an engaging plate 63 is horizontally provided on the spreader shaft 59 at the junction thereof with the ignition lever 61. A fire extinguishing lever 64 has its one end swingably mounted in the supporting block 65 and has the other end thereof bent at right angle with respect to a fioor surface 66 on which the apparatus is placed. The swingably supported end of the lever 64 also acts as a pivot for the fitting member 62. A helical spring 67 is provided at the supporting block 65 to normally urge the fire extinguishing lever 64 downwardly. Swingably mounted at one end on the swingably supported end of the fire extinguishing lever 64 at the supporting block 65 is a lever 68 for actuating the shaft 60 of the fire extinguishing cover 58. An unlocking lever 69 is swingably mounted at one end on a bent portion of the iire extinguishing lever 64 at a position adjacent the supporting block 65. An axial slot 70 is provided adjacent the free end of the unlocking lever 69.y The lower end of the shaft 60 of the fire extinguishing cover 58 is suitably bent so as to be loosely fitted in the free end of the lever 68, and then slidably received in the axial slot 70 of the unlocking lever 69. A retaining means such as a split pin is provided at the lower bent end of the shaft 60 so that it may not escape out of the slot 70. An unlocking projection 71 is integrally formed on the lower face at the free end of the unlocking lever 69. The lever 68 is normally urged downwardly by a helical spring 72 interposed between it and the bottom face of the fuel reservoir I. A locking lever 73 is swingably supported at one end by a supporting member 74 provided on the upper inside wall of the air conduit member 2 and depends downwardly in the air conduit member 2. The locking lever 73 is provided with a cutout 75 formed intermediate its length. The locking lever 73 is interposed between the lever 68 and the unlocking lever 69 and a spring 73 is provided at the supporting member 74 to normally urge the rear edge of the locking lever '73 into contact with the shaft 66 at a position between the lever 68 and the unlocking lever 69. A switch actuating member 78 is suitably mounted on a portion of the spreader shaft 59 and has tongues 78 and 78 provided thereon so that, during upward movement of the shaft 59, the tongue 78 can abut the abutment 55 projected through the slot 5l. of the holding member 50 and at the same time the tongue 78 can contact the terminal of the ignition heater 57 for energization of the heater 57.

In the state of the oil combustion apparatus shown in FIGS. 3 and 4, it has been ignited and has entered in the burning state. Or more precisely, in the normal nonoperative state of the apparatus, the lever 68, the unlocking lever 69 and the fire extinguishing cover 58 are at the positions as shown by two-dot chain lines. By forcing the ignition lever 6I downwardly from the position shown in solid lines7 the joined end thereof swings upwardly about the supporting block 65 to urge the spreader shaft 59 upwardly for causing upward movement of the spreader 8 away from the air conduit member 2. When the ignition lever 61 is forced further downwardly, the engaging plate 63 urges the lower edge of the unlocking lever 69 upwardly and consequently the lever 68 is moved upwardly against the force of the spring 67 for causing upward movement of the fire extinguishing cover 58 through the shaft 60. After the fire extinguishing cover 58 moves upwardly to a predetermined position, the lower bent end of the shaft 60 is engaged by the cutout 75 of the locking lever 73. Under this state, the locking lever 73 is urged towards the shaft 60, while the unlocking lever 69 and the lever 68 are urged downwardly about their supported ends, and thus the shaft 60 is positively locked in place. Further, the free end of the fire extinguishing lever 64 is urged normally downwardly towards the floor surface 66 by the spring 67 and may take a position as shown by phantom lines. But, the free end of the lever 64 is actually kept at the position as shown by solid lines against the force of the spring 67 because the apparatus itself has a substantial weight.

During the upward movement of the fire extinguishing cover 58 and the spreader 8, the tongue 78 of the switch actuating member 7 8 abuts the projected end of the abutment 55 projecting through the slot 51 of the holding member 50 and causes the auxiliary wick supporting pipe 54 to move upwardly against the force of the spring 56. Thus, the tip portion of the auxiliary wick 53 is made to protrude above the upper opening of the re extinguishing pipe 52. Simultaneously with this movement, the tongue 78 of the switch actuating member 78 closes the circuit of the ignition heater 57 for energizing the same for thereby igniting the tip portion of the auxiliary wick 53 exposed above the fire extinguishing pipe 52. The pilot flame on the auxiliary wick 53 spreads to the main wick 3 through the space between the spreader 8 and the upper end edge of the air conduit member 2 to ignite the main wick 3. Upon releasing the downward force on the ignition `lever 6I after the ignition, the combined action of the weight of the spreader 8 and the spreader shaft 59 and the force of the spring 77 causes the downward movement of the spreader 8 to its normal operation position, while the fire extinguishing cover 58 is held in its upward position since the lower bent end of the shaft 60 is engaged by the cutout 75 of the locking lever 73. Thus, combustion is continued at the above state or at the state as illustrated in FIG. .3.

If the apparatus is upset or tilted more than a predetermined allowable inclination due to an unexpected accident such as an external shock, the free end of the tire extinguishing lever 64 is urged downwardly about the supporting block 65 because it is normally urged towards the oor surface 66 by the spring 67. Therefore, that end of the unlocking lever 69 which is supported on the fire extinguishing lever 64 is urged to move in the swinging direction of the lever 64, and as a result thereof, the unlocking projection 7l urges the locking lever 73 in a direction opposite to the normally urged direction to thereby disengage the shaft 66 from the cutout 75 of the locking lever 73. Thus, the unlocking lever 69 and the lever 68 are made to swing downwardly about their swingably supported ends by the action of the spring 72 to thereby cause downward movement of the ends connected with the shaft 60 of the fire extinguishing cover 58. Therefore, the shaft 68 is pulled downwardly to cause the fire extinguishing cover 58 to move abruptly downwardly onto the combustion section to extinguish the fire by completely covering the combustion section. Any possibility of causing tire due to an accident such as upset of apparatus can thus be eliminated.

Still another form of ignition and lire extinguishing means incorporated in the inventive apparatus is schematically illustrated in FIG. 5. The ignition and fire extinguishing means shown in FIG. 5 have a structure approximately similar to the structure of those shown in FIGS, 3 and 4, and like reference numerals are used in FIG. 5 to designate like parts appearing in FIGS. 3 and 4. It will be seen that the structure shown in FIG. 5 differs from that shown in FIGS. 3 and 4 in that the horizontally disposed engaging plate 63 is eliminated and in place thereof an abutment 8l is provided at a portion of the lever 68 in a manner that the tip portion of the abutment 81 abuts a horizontal portion 8@ of the fire extinguishing lever 64. Therefore, the fire extinguishing unit in FIG. 5 is not set at the operative position by the manipulation of the ignition lever 61 unlike the arrangement shown in FIGS. 3 and 4. In the arrangement shown in FIG. 5, the fire extinguishing lever 64 is urged upwardly against the force of the spring 67 by the weight of the apparatus when the apparatus is placed on the door surface 66, and the horizontal portion 88 of the lever 64 urges the abutment 81 upwardly. Therefore, the lever 68 and the unlocking lever 69 are made to swing upwardly against the force of the spring 72 to cause upward movement of the shaft 68 of the fire yextinguishing cover 58. When the fire extinguishing cover 58 moves upwardlyV to a predetermined position, the bent end of the shaft 60 is engaged by the cutout '75 of the locking lever 73 and locked in position, thus completing the preparation for fire extinguishing. Thereafter, ignition can be effected by forcing the ignition lever 6I downwardly and the igniting operation is carried out in an entirely same manner with that of the arrangement shown in FIGS. 3 and 4. Fire extinguishing action in the event of upset of the apparatus is the same with tnat of the arrangement of FIGS. 3 and 4. The apparatus of FIG. 5 differs from that of 9 FIGS. 3 and 4 in that the fire extinguishing unit of the former is automatically set at the operative state when the apparatus is merely placed on the floor surface, and thus the preparation for fire extinguishing is always completed prior to igniting operation of the apparatus.

A further form of the ignition and fire extinguishing means will be described hereinunder with reference to FIGS. 6 and 7. An auxiliary wick holding member 82 is tted on the upper inside wall of the air conduit member 2 in a manner that it extends radially inwardly to define a space between the extended wall and the inside wall of the air conduit member 2. A longitudinal guide slot 83 is formed in the bulged wall of the holding member 82, which is open at the upper end. A fire extinguishing pipe 84 is longitu-dinally disposed in the upper opening of the bulged portion defined by the holding member 82. An auxiliary wick 85 is disposed in the space in the extended portion and supported in a supporting pipe 86. The upper end of the auxiliary wick 85 suitably protrudes from the upper opening of the supporting pipe 86 and is -urged by externally provided means upwardly to a posi- .tion exposed above the upper opening of the re extinguishing pipe 84 and downwardly to a position retracted 'into the re extinguishing pipe 84. The lower end of the auxiliary wick 85 is retained in the holding member 82 and is brought into contact with the inner face of the main wick 3 through an opening bored in the air conduit member 2. An abutment 87 is fixed to the lower end of the supporting pipe 86 and has a portion thereof made to project radially inwardly into the air conduit member 2 through the slot 83 of the holding member 82. A helical spring 88 is tted on the supporting pipe 86 between the lower end of the fire extinguishing pipe 84 and the upper end of the abutment 87 to normally urge the supporting pipe 86 downwardly so that the 4tip portion of the auxiliary wick 85 is normally retracted into the fire extinguishing pipe 84.

An ignition heater 89 is disposed adjacent the upper opening of the fire extinguishing pipe 84 to ignite the auxiliary wick 85 when it is exposed above the upper opening of the fire extinguishing pipe 84. A frame member 90 of substantially inverted U-shape is provided along the inside wall of the air conduit member 2.and has its opposite ends securely fixed to a lower part of the air conduit member 2. Vertically movably disposed in the air conduit member 2 is a shaft 91, which extends through the spreader 8 and is slidably received in aligned bores provided in the upper side or web of the frame member 90 and in a frame 92 bridging the opposite legs of the frame member 90. The spreader 8 is supported on a spreader carrier 93, which is loosely mounted on the shaft 91 and consists of a spreader receiving portion 94 disposed adjacent the upper portion of the frame member 90 and a base portion 96 supported by lugs 95- provided on the frame member 90. The spreader 8 is fitted to the receiving portion 94, and springs 97 are interposed between the base portion 96 and the frame 92. One of the springs 97, which would be seen in FIG. 7, has been omitted for the sake of clarity. A member 98 is hooked at one end on the frame 92 and depends downwardly therefrom. An engaging member 99 is pivotally supported on the hooked portion of the member 98l on the frame 92 and is provided with an engaging lug 100 projecting outwardly beyond the frame 92. A generally supporting frame 102 and a rear portion of the engaging member 99 to normally maintain the engaging member 99 at the position shown in solid lines.

A pin 104 is suitably provided at an upper part of the shaft 91 and takes a position as shown in FIG. 6, at the elevated position of the shaft 91, but is lowered to a position as shown by reference numeral 104 when the shaft 91 is moved downwardly. A helical spring 105 is fixed at one end to the pin 104 and at the other end to the lower end of the member 98 so as to normally urge the shaft 91 downwardly. A generally U-shaped member 106 is slidably mounted on the shaft 91 to make a sliding movement between the pin 104 and the frame 92. On the lower face of the fuel reservoir 1, there is provided a supporting block 107 on which a bearing member 109 is pivotally mounted to receive therein an intermediate portion of an ignition lever 108 to swingably support the lever 108 thereat. One end of the ignition lever 108 serves as an actuating end, while the other end thereof is operatively connected to the slidable member 106 by means of a connecting rod 110. Thus it will be understood, that by forcing down the actuating end of the ignition lever 108, the slidable member 106 is urged upwardly to engage the pin 104 for thereby causing upward movement of the shaft 91. During the upward movement of the slidable member 106, it urges the spreader carrier 93 upwardly. At a predetermined upwardly elevated position of the slidable member 106, the lower end of the shaft 91 is engaged by the engaging member 99 and locked in place. For greater clarity, FIG. 8 shows the engaging member 99 and the surrounding structure in perspective.

An operating rod 111 is disposed in parallel with the shaft 96 and extends vertically slidably through the base portion 96 of the spreader carrier 93 and through the frame 92. A helical spring 113 is fixed at one end to a pin 112 mounted in an upper part of the rod 111 and at the other end to the frame 92 to normally urge the rod 111 downwardly. When, however, the apparatus is placed on a floor surface 114, the lower end of the operating rod 111 is abutted by the iioor lsurface 114 so that the rod 111 is urged upwardly against the downwardly directed force exerted by the spring 113. An operating member 115 is provided at a portion of the operating rod 111 in a manner that it is disposed opposite the engaging lug 100 of the engaging member 99 and is operative to urge the engaging lug 100 downwardly to disengage the spreader shaft 91 from the engaging member 99 when the operating rod 111 is forced downwardly by the action of the spring 113. A re extinguishing cover 117 is mounted on the top end of the shaft 91 so as to cover the combustion section to extinguish the fire at the lowered position of the shaft 91. In order to guide the mounting of the frame member 90 in the air conduit member 2, an annular member 118 is provided on the outer periphery of the frame member 90.

A contact driving portion 119 is suitably formed on the spreader carrier 93 in opposed relation to a contact strip 120 of the ignition heater 89 so that the contact driving portion 119 can drive the contact strip 120 to complete the circuit of the ignition heater 89 for thereby igniting the tip portion of the auxiliary wick 85 as soon as the tip portion of the auxiliary wick 85 is exposed above the upper opening of the re extinguishing pipe 84 by the abutment of the base portion 96 of the spreader carrier 93 with the abutment 87 as the result of upward movement of the spreader carrier 93 and the resultant movement of the spreader 8. Thus, the pilot flame igniting on the auxiliary wick 85 can spread to the tip portion of the main wick 3 through an aperture 121 bored in the spreader 8.

The oil combustion apparatus with the ignition and tire extinguishing means as shown in FIGS. 6 and 7 operates in the following manner. When now the slidable member 106 is urged upwardly by forcing the actuating end of the ignition lever 108 downwardly, the slidable member 106 abuts the pin 104 to cause upward movement of the shaft 91 against the force of the spring 105, and thus the vupward movement of the fire extinguishing cover 117.

During the upward movement, the slidable member 106 urges the base portion 96 of the spreader carrier 93 to cause upward movement of the spreader 8. After the shaft 91 has moved a predetermined length upwardly, its lower end is engaged by the engaging member 99 and is retained at its elevated position. When, after the above operation, the force on the ignition lever 108 is released, the combined action of the weight of the slidable member 106 and the ignition lever 108 and the force of a spring provided at the bearing member 109 of the ignition lever 108 causes the downward movement of the slidable member 106 and the ignition lever 10S to their normal inoperative positions. Further, the spreader carrier 93 is also retracted to its original position by the action of the springs 97 to bring down the spreader 8 to its normal operative position. During the upward movement of the spreader 8, the base portion 96 of the spreader carrier 93 abuts the projected portion of the abutment 87 projecting through the slot 83 to cause upward movement of the supporting pipe 86 against the force of the spring 88 so that the tip portion of the auxiliary wick 85 is exposed above the lire extinguishing pipe S4. Simultaneously with the exposure of the auxiliary wick 85, the contact driving portion 119 drives the contact strip 120 to complete the circuit of the ignition heater 89 so that the tip portion of the auxiliary wick 85 can be ignited by the ignition heater 89. Ignition can be easily effected since the auxiliary wick 8S is in contact with the main wick 3 at all times and oil is continuously supplied to the auxiliary wick 85. The pilot arne burning on the auxiliary wick 85 spreads to the tip portion of the main wick 3 through the aperture 121 in the spreader 8, igniting the main wick 3. After ignition takes place on the main wick 3, the force on the ignition lever 108 may be released. Then, the spreader carrier 93 is urged to move downwardly by the action of the springs 97 to open the circuit of the ignition heater 89, while the auxiliary wick 85 is urged to move downwardly by the action of the spring 88 into the fire extin-guishing pipe 84 and the flame thereon is extinguished. Under this situation, combustion continues with the main wick 3.

Meanwhile, the lower end of the operating rod 111 is abutted by the iioor surface 114 and maintains its elevated position against the force of the spring 113. If the cornbustion apparatus should be upset or til-ted more than a predetermined allowable inclination by some unexpected accident, the bottom face of the apparatus moves away from the floor surface 114 and thus the operating rod 111 is caused to move downwardly by the action of the spring 113, so that the operating member 115 urges the engaging lug 100 of the engaging member 99 downwardly against the force of the spring 103 to disengage the shaft 91 from the engaging member 99. Therefore, the shaft 91 is moved abruptly downwardly by the action of the spring 105 to thereby cause the fire extinguishing cover 117 to completely cover the combustion section for extinguishing the re.

In the foregoing, detailed description has been given with regard to the structure and function of the oil combustion apparatus of the invention with various forms of ignition and tire extinguishing means. Hereinunder, description will be made with regard to various advantages of the inventive apparatus over those of prior design.

According to the oil combustion apparatus of the invention, the auxiliary wick is disposed in the cylindrical air conduit member and brought into contact with a portion of the main wick for obtaining therefrom the supply of fuel required for ignition. This arrangement is advantageous in that the lower end of the auxiliary wick need not be dropped into the fuel reservoir and material of short length will thereby suffice. Therefore, expensive material optimum for ignition can be economically used as the auxiliary wick, and there is utterly no possibility of causing lire by the auxiliary wick because the flame burning on the auxiliary wick is spontaneously extinguished after a certain time required for ignition due to a relation between combustion and fuel supply since the auxiliary wick is merely brought into contact with the main wick. Further, fire extinguishing of the auxiliary wick can positively be effec-ted because the auxiliary wick is completley retracted into the fire extinguishing pipe after ignitionv takes place on the main wick.

A further advantage is that the ignition of the main wick can unfailingly be effected since the auxiliary wick is disposed within the air conduit member about which the main wick is disposed and the pilot llame on the auxiliary wick is made to spread to the main wick from the inner face thereof. Or more precisely, it is generally dicult to ignite the tip portion of the main wick because it is deformed or deposited by tarry matters due to continued combustion, but the inner face of the wick is free from such deformation or deposition of tarry matters, and a fresh face is always exposed. Therefore, ignition can be unfailingly effected. Since, further, this igniting operation can extremely easily be attained from outside of the apparatus by mere manipulation of the ignition lever, ignition can be made in a simple, positive and excellent manner.

According to the arrangement of the inventive apparatus, the re extinguishing cover covering the combustion section is automatically lifted upwardly to complete the preparation for tire extinguishing as soon as the ignition lever is manipulated for ignition or the combustion apparatus is merely placed on a floor surface. In the event of upset of the combustion apparatus, lthe fire extinguishing cover makes an abruptly downward movement to completely cover the combustion section. Therefore, there is utterly no possibility that fuel leaked by an accident such as upset of the apparatus catches lire to instantaneously start a re and the lire extinguishing cover insures a positive re extinguishing action to thereby provide the combustion apparatus with a high degree of safety. A still further advantage is lthat extra levers or the like for fire extinguishing purposes are not especially required in the inventive apparatus because preparation for re"extinguishing can be completed by merely placing the apparatus on the Hoor surface or by mere manipulation of the ignition lever. Thus, the structure of the combustion apparatus can remarkably be simplied.

According to the arrangement of the inventive apparatus, the ignition means including the ignition heater and the auxiliary wick and the re extinguishing means including the shafts, rods, levers, springs and fire extinguishing cover are disposed in the air conduit member acting as a means of obtaining primary combustion air required for the proper combustion by the main wick. Since these means are not exposed to outside and compactly arranged in the air conduit member, they are free from any breakage due to external shock or the like which may result in an erroneous operation, and thus a reliable action can be ensured at all times. The combustion apparatus with these excellent features can work with unfailing ignition and re extinguishing characteristics and at a high degree of safety.

In the foregoing, detailed description -has been given with regard to various embodiments of the invention, but it will be understood that the invention is in no way limited to 4such specific embodiments and various changes and modification may be made without departing from the spirit and scope of the invention as defined in the appended claims.

What isH 'claimed is:

1. Arroil combustion apparatus comprising a cylindrical airI 'conduit member supporting a main wick on its outerperipheral face for conducting primary air therethrough for supply to the main wick, a spreader disposed in the upper opening of said cylindrical air conduit member for vertical movement towards and away from said cylindrical air conduit member, an auxiliary wick disposed at an upper portion on the inside wall of said cylindrical air conduit member and brought into contact with the inner face of the main wick for receiving from the main wick the supply of fuel required for ignition,

a spreader shaft arranged for vertical movement in said cylindrical air conduit member and having said spreader mounted on the top end thereof, said spreader shaft being Operative to close during its upward movement a circuit of an ignition heater for igniting said auxiliary wick, an unlocking lever swingably mounted at one end on a pivot of an ignition lever and having its intermediate portion suitably bent downwardly so that the other end thereof can abut a floor surface on which said apparatus may be placed, a re extinguishing rod extending through said spreader for vertical movement in said cylindrical air conduit member and having a tire extinguishing cover mounted on its top end so that the fire extinguishing cover can cover the combustion section by the downward movement thereof, said iire extinguishing rod having its lower end suitably curved, a fire extinguishing lever swingably mounted at one end on the pivot of the ignition lever for simultaneous swinging movement with the ignition lever when the ignition lever is manipulated, said re extinguishing lever having the other end operatively connected to the curved lower end of said rst extinguishing rod, a locking lever depending downwardly in said cylindrical air conduit member and having a stepped portion intermediate its length for engaging with the curved lower end of said tire extinguishing rod during the upward movement of said fire extinguishing rod, a helicalv tension spring fixed at one end to the lower end of said locking lever and at the other end to a portion of said unlocking lever to normally urge the bent portion of said unlocking lever in a direction to disengage said re extinguishing rod from said locking lever, and a helical spring normally urging said iire extinguishing lever to swing downwardly.

2. An oil combustion apparatus comprising a cylindrical air conduit member supporting a main wick on its outer peripheral face for conducting primary air therethrough for supply to the main wick, a spreader disposed in the upper opening of said cylindrical air conduit member for vertical movement towards and away from said cylindrical air conduit member, an auxiliary wick disposed at an upper portion on the inside wallof said cylindrical air conduit member and brought into contact with the inner face of the main wick for receiving from the main wick the supply of fuel required for ignition, a spreader shaft arranged for making vertical movement in said cylindrical air conduit member by the manipulation of an ignition lever and having said spreader mounted on kthe top end thereof, said spreader shaft being operative during its upward movement to energize an ignition heater for igniting said auxiliary wick, a lire extinguishing lever normally urged to swing downwardly, a shaft of a fire extinguishing cover having the tire extinguishing cover mounted on its top end and extending through said spreader for vertical movement in said cylindrical air conduit member so that the tire extinguishing cover can cover the combustion section at the lowered position of said shaft, said shaft having its lower end suitably bent outwardly, an unlocking lever swingably mounted at end on a portion of said iire extinguishing lever and having an axial slot adjacent the other end thereof for receiving therein the lower end of said shaft of the fire extinguishing cover, said unlocking lever being urged to swing upwardly by means provided on the ignition lever in response to the manipulation of the ignition lever, an actuating lever for said shaft of the re extinguishing cover, said actuating lever being swingably supported at one end thereof and having a bore adjacent the other end thereof for loosely receiving therein the lower end of said shaft of the fire extinguishing cover after being passed through the axial slot in said unlocking lever, and a locking lever having a cutout at an intermediate portion thereof for engagement with the lower end of said shaft of the fire extinguishing cover and urged by said unlocking lever in a direction to be disengaged from said shaft of the lire extinguishing cover when said unlocking lever is caused to move by the downwardly swinging movement of said fire extinguishing lever.

3. An oil combustion apparatus according to claim 2, in which an abutment is provided at a portion of said actuating lever operatively connected with said shaft of the fire extinguishing cover in lieu of said means provided on the ignition lever so as to be abutted by said fire extinguishing lever to cause upwardly swinging movement of said unlocking lever when said apparatus is placed on a oor surface.

4. On oil combustion apparatus comprising a cylindrical air conduit member supporting a main wick on its outer peripheral face for conducting primary air therethrough for supply to the main wick, a spreader disposed in the upper opening of said cylindrical air conduit member for vertical movement towards and away from said cylindrical air conduit member, an auxiliary wick disposed at an upper portion on the inside wall of said cylindrical air conduit member and brought into contact with the inner face of the main wick for receiving from the main wick the supply of fuel required for ignition, a shaft of a fire extinguishing cover having the re extinguishing cover mounted at its top end and extending through said spreader for vertical movement in said cylindrical air conduit member so that the fire extinguishing cover can cover the combustion section at the lowered position of said shaft, a helical spring for normally urging said shaft of the fire extinguishing cover downwardly, an engaging member for locking said shaft of the fire extinguishing cover against downward movement at the elevated position of said shaft for holding said shaft at the elevated position, a slidable member vertically slidably mounted on said shaft of the re extinguishing cover for causing upward movement of said shaft against the force of said spring, a spreader carrier loosely mounted on said shaft of the re extinguishing cover for vertically sliding movement thereon and having said spreader mounted thereon, said spreader carrier being operative in cooperation with the upward movement of said shaft over a predetermined distance to energize an ignition heater for igniting said auxiliary wick, an operating rod normally urged downwardly so that its lower end is abutted by a floor surface on which said apparatus is placed, said operating rod being operative to act on said engaging member during its downward movement to disengage said shaft of the fire extinguishing cover from said engaging member, and an ignition lever operative to cause upward movement of said slidable member.

5. An oil combustion apparatus comprising a cylindrical air conduit supporting a main wick on its outer peripheral face for conducting primary air therethrough, an auxiliary wick disposed at an upper portion on the inside wall of said cylindrical conduit and brought into Contact with the inner face of the main wick for receiving therefrom the supply of fuel required for ignition, an ignition heater for igniting the tip of said auxiliary wick, lever means for effecting ignition to said auxiliary wick, by said ignition heater, a re extinguishing cover adapted to be locked by a locking means at a level above the combustion section at the time of combustion, and tire extinguishing means for releasing said locking means at such times as the upset of the apparatus to cause downward movement of said re extinguishing cover to cause downward movement of said iire extinguishing cover thereby to extinguish the combustion of the main wick.

6. An oil combustion apparatus comprising a cylindrical air conduit supporting a main wick on its outer peripheral face for conducting primary air therethrough, a spreader detachably mounted at the opening of said cylindrical air conduit, a holding member mounted at an upper portion of said cylindrical air conduit so as to define a space between it and the inside wall of said cylindrical air conduit and having an axial slot bored therein, a fire extinguishing pipe attached to an opening of said holder, an auxiliary wick adapted to be brought into contact azar/,era

with the inner face of the main wick for receiving therefrom the supply of fuel required for ignition, a supporting pipe for supporting said auxiliary wick and for causing the tip of said auxiliary wick t0 emerge from or sink into said fire extinguishing pipe, a supporting member attached to said supporting pipe in a manner that a portion thereof projects into said cylindrical air conduit through the slot in said holding member, a Spring mounted on said supporting pipe between said holding member and said re extinguishing pipe so as to always urge said auxiliary wick to a position retracted intosaid tire extinguishing pipe, a shaft for extinguishing tire adapted to move upwardly and downwardly and disposed at substantially the central portion within said cylindrical air conduit, a re extinguishing cover attached to the end of said shaft for extinguishing re by covering said combustion section at the time said shaft moves downwardly, means for locking the downward movement of said shaft as it makes upward movement and for maintaining the position of said shaft, means for operating said supporting member projecting from said slot in said holding member during the uplifting action exerted by said spreader in response to the manipulation of said lever thereby to cause said auxiliary wick to emerge from said fire extinguishing wick, and means for releasing said locking means of said shaft at such time as the upset of the apparatus to cause the fire extinguishing cover to make downward movement.

12/1905 Lind et al. 317-91 10/1913 Stendahl 158-94 X FREDERICK KETTERER, Primary Examiner. 

1. AN OIL COMBUSTION APPARATUS COMPRISING A CYLINDRICAL AIR CONDUIT MEMBER SUPPORTING A MAIN WICK ON ITS OUTER PERIPHERAL FACE FOR CONDUCTING PRIMARY AIR THERETHROUGH FOR SUPPLY TO THE MAIN WICK, A SPREADER DISPOSED IN THE UPPER OPENING OF SAID CYLINDRICAL AIR CONDUIT MEMBER FOR VERTICAL MOVEMENT TOWARDS AND AWAY FROM SAID CYLINDRICAL AIR CONDUIT MEMBER, AN AUXILIARY WICK DISPOSED AT AN UPPER PORTION ON THE INSIDE WALL OF SAID CYLINDRICAL AIR CONDUIT MEMBER AND BROUGHT INTO CONTACT WITH THE INNER FACE OF THE MAIN WICK FOR RECEIVING FROM THE MAIN WICK THE SUPPLY OF FUEL REQUIRED FOR IGNITION, A SPREADER SHAFT ARRANGED FOR VERTICAL MOVEMENT IN SAID CYLINDRICAL AIR CONDUIT MEMBER AND HAVING SAID SPREADER MOUNTED ON THE TOP END THEREOF, SAID SPREADER SHAFT BEING OPERATIVE TO CLOSE DURING ITS UPWARD MOVEMENT A CIRCUIT OF AN IGNITION HEATER FOR IGNITING SAID AUXILIARY WICK, AN UNLOCKING LEVER SWINGABLY MOUNTED AT ONE END ON A PIVOT OF AN IGNITION LEVER AND HAVING ITS INTERMEDIATE PORTION SUITABLY BENT DOWNWARDLY SO THAT THE OTHER END THEREOF CAN ABUT A FLOOR SURFACE ON WHICH AND APPARATUS MAY BE PLACED, A FIRE EXTINGUISHING ROD EXTENDING THROUGH SAID SPREADER FOR VERTICAL MOVEMENT IN SAID CYLINDRICAL AIR CONDUIT MEMBER AND HAVING A FIRE EXTINGUISHING COVER MOUNTED ON ITS TOP END SO THAT THE FIRE EXTINGUISHING COVER CAN COVER THE COMBUSTION SECTION BY THE DOWNWARD MOVEMENT THEREOF, SAID FIRE EXTINGUISHING ROD HAVING ITS LOWER END SUITABLY CURVED, A FIRE EXTINGUISHING LEVER SWINGABLY MOUNTED AT ONE END ON THE PIVOT OF THE IGNITION LEVER FOR SIMULTANEOUS SWINGING MOVEMENT WITH THE IGNITION LEVER WHEN THE IGNITION LEVER IS MANIPULATED, SAID FIRE EXTINGUISHING LEVER HAVING THE OTHER END OPERATIVELY CONNECTED TO THE CURVED LOWER END OF SAID FIRST EXTINGUISHING ROD, A LOCKING LEVER DEPENDING DOWNWARDLY IN SAID CYLINDRICAL AIR CONDUIT MEMBER AND HAVING A STEPPED PORTION INTERMEDIATE ITS LENGTH FOR ENGAGING WITH THE CURVED LOWER END OF SID FIRE EXTINGUISHING ROD DURING THE UPWARD MOVEMENT OF SAID FIRE EXTINGUISHING ROD, A HELICAL TENSION SPRING FIXED AT ONE END TO THE LOWER END OF SAID LOCKING LEVER AND AT THE OTHER END TO A PORTION OF SAID UNLOCKING LEVER TO NORMALLY URGE THE BENT PORTION OF SAID UNLOCKING LEVER IN A DIRECTION TO DISENGAGE SAID FIRE EXTINGUISHING ROD FROM SAID LOCKING LEVER, AND A HELICAL SPRING NORMALLY URGING SAID FIRE EXTINGUISHING LEVER TO SWING DOWNWARDLY. 